to Equatable and Hashable https://forums.swift.org/t/se-0215-conform-never-to-equatable-and-hashable/13586 • SE-0102: Remove @noreturn attribute and introduce an empty Never type https://github.com/apple/swift-evolution/blob/master/proposals/0102-noreturn-bottom- type.md • [Pitch] Never as a bottom type https://forums.swift.org/t/pitch-never-as-a-bottom-type/5920